Large-flexibility rotary hinge with annularly and uniformly distributed semi-ring sheets

Abstract

The invention discloses a large-flexibility rotary hinge with annularly and uniformly distributed semi-ring sheets. The large-flexibility rotary hinge comprises a cylindrical and annular fixed part and an input / output part which is coaxial to the fixed part and is on the same plane of the fixed part, wherein 3-6 semicircular spring sheets with the uniform inner diameter, outer diameter and width are uniformly arranged between the fixed part and the input / output part at intervals; one ends of the spring sheets are in internally tangent connection with the inner wall of the fixed plate; the other ends of the spring sheets are in externally tangent connection with the outer wall of the input / output part; a cross-shaped or spline-shaped connection hole is formed in the center of the input / output part. According to the large-flexibility rotary hinge, large-angle two-dimensional rotary output can be obtained; structural sizes and the sheet quantity of the spring sheets can be changed according to a specific working environment to obtain a proper maximum rotary angle; the annular uniform distribution structure of the spring sheets is adopted so that the stability of angle output is improved, namely the rotation rigidity of the other two shafts is increased and the drifting of axes in the rotation process is reduced; the large-flexibility rotary hinge with the annularly and uniformly distributed semi-ring sheets is simple in structure and convenient to machine, and can be integrally machined and molded by using a linear cutting machine.

Description

technical field [0001] The present invention relates to the present invention is a large-flexible rotating hinge with self-recovery function that converts torque input into angle output, and is mainly used in instruments and meters such as precision transmission and precision positioning. Background technique [0002] The flexible hinge refers to a kinematic pair structure that uses the elastic deformation of the material to generate relative motion between adjacent rigid rods under the action of an external force or moment, which is very different from the structure of the traditional rigid kinematic pair. Compared with traditional rigid hinges (mechanisms), flexible hinges and flexible mechanisms have many advantages: (1) can be designed and processed in one piece, so it can simplify the structure, reduce volume and weight, and avoid assembly; (2) no gap and Friction can realize high-precision movement; (3) avoid wear and improve life; (4) avoid lubrication and avoid pollu...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the commonly used flexible hinges are short arm or notch hinges, and a few are straight hinges. Although they are well used in ordinary occasions, their shortcomings such as small rotation angle and stress concentration limit them. scope of application

Although individual special rotating hinges have increased the rotating angle, they are difficult to be popularized due to the complex structure and difficulty in processing, and the effect of increasing the rotating angle is not obvious enough.

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